Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
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wondering how they would act when released, which may be today. I happened to glance down the road toward the thrasher nest
and saw Brown-eyes headed for me about 100 feet away. I did not call her, but she was running toward me like a road-runner and,
of course, it meant that the nestling needed attention again. I therefore produced the box of worms and held some in my hand
at about the level of the arm of the chair. Brown-eyes jumped
up on to the toe of my shoe which was about a foot above the ground, as my legs were crossed, then up to my hand, taking four
worms, which she prepared, then off at full speed down the road
again. In about a minute she was back again, this time taking
two worms. In about two minutes, Green-eyes, whom his mate
had evidently told about the soft snap, also came running
along the road toward me, stopped in front of me, looking at
me expectantly but not offering to jump up. I dropped one
worm at a time near my feet. He "prepared" each in the same way
as his mate, and, between worms, watched me to see whether I would give him more. In this way he got three and headed for
the nest on the road at full speed. The next trip was made by
Brown-eyes, who took one. The next by Green-eyes, who took
three. Brown-eyes was back once more and took one worm, which
she ate herself. This meant, as Green-eyes did not reappear at
once, that the saturation point at the nest had been reached.
By actual timing this episode occupied a little less than 10
minutes. During this time the worms taken to the nest totalled
14 and the distance traversed by both birds aggregated 2,200 feet horizontally and 220 vertically. This tremendous,
intensive stuffing campaign undoubtedly meant that the birds
wanted some time off for themselves, so going back to Brown-eye
taking the worm for herself, the next event consisted of a good
meal for Brown-eyes from my hand, after which she ran up